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RS422 kölcsönös konverziós TTL kétirányú jelmodul full duplex 422 fordulat egy chip MAX490 TTL modul 3.3V/5V leválasztási típus
RS422 mutual conversion TTL two-way signal module full duplex 422 turn single chip MAX490 to TTL module 3.3V/5V isolation type
Vcc is connected to the positive power supply, GND is connected to the negative power supply, the module TXD is connected to the microcontroller rxd, and the module RXD is connected to the microcontroller txd. The power ground and the TTL signal ground must be grounded together
This module uses isolated power supply and magnetic isolation chip to completely isolate the front and rear stages.
Send four Dupont wires
Module interface definition:
Module 4P terminal side:
VCC <<>> 5V / 3.3V (module specification)
TXD <<>> The TTL (UART) transmission of this module is connected to the RXD receiving pin of the microcontroller
RXD <<>> TTL (UART) receiving of this module, connected to the TXD sending pin of the microcontroller
GND <<>> The ground wire of this module (this ground wire must be connected to the ground of the microcontroller system)
Module 5P terminal side:
R /A <<>> The A pin of this module needs to be connected to the T /Y pin of other 422 modules
R-/B <<>> The B pin of this module needs to be connected to the T-/Z pin of other 422 modules
T-/Z <<>> The Z pin of this module needs to be connected to the R-/B pin of other 422 modules
T /Y <<>> The Y pin of this module needs to be connected to the R /A pin of other 422 modules
GND <<>> The ground wire of this module, if some conditions allow, the ground wire can be drawn out as the return path of the common mode signal of the signal. Of course, this wire can not be used when the conditions do not allow it.
1005004280317915. - miyu